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POTrouble Passing Parameter to LinqToSql Stored Procedure
 

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    <pre><code>public IEnumerable&lt;T&gt; ExecuteStoredProcedure&lt;T&gt;(params object[] parameters) { Type genericType = typeof(T); string commandthing = genericType.Name.Replace("Result", ""); //_db is my Linq To Sql database return _db.ExecuteQuery&lt;T&gt;(commandthing, parameters).AsEnumerable(); } </code></pre> <p>The stored procedure is named GetOrder and has a single int parameter of orderid. I'm calling the above like so:</p> <pre><code>SqlParameter parm1 = new SqlParameter("@orderid", SqlDbType.Int); parm1.Value = 123; var results = _session.ExecuteStoredProcedure&lt;GetOrderResult&gt;(parm1).Single(); </code></pre> <p>I'm receiving the following error: A query parameter cannot be of type 'System.Data.SqlClient.SqlParameter'</p> <p>Thoughts? Or am I just missing something obvious?</p> <p><strong>Update:</strong> I'm trying to make this as generic as possible...my current thinking is that I'm going to have to do some string trickery to create the ExecuteQuery text and parameters.</p> <p><strong>Update:</strong> Posting below my Session Interface and my Linq to Sql Implementation of the interface...hopefully that will clarify what I'm attempting to do</p> <pre><code> public interface ISession : IDisposable { void CommitChanges(); void Delete&lt;T&gt;(Expression&lt;Func&lt;T, bool&gt;&gt; expression) where T : class; void Delete&lt;T&gt;(T item) where T : class; void DeleteAll&lt;T&gt;() where T : class; T Single&lt;T&gt;(Expression&lt;Func&lt;T, bool&gt;&gt; expression) where T : class; IQueryable&lt;T&gt; All&lt;T&gt;() where T : class; void Add&lt;T&gt;(T item) where T : class; void Add&lt;T&gt;(IEnumerable&lt;T&gt; items) where T : class; void Update&lt;T&gt;(T item) where T : class; IEnumerable&lt;T&gt; ExecuteStoredProcedure&lt;T&gt;(params object[] parameters); } public class LinqToSqlSession : ISession { public readonly Db _db; public LinqToSqlSession() { _db = new Db(ConfigurationManager.ConnectionStrings[Environment.MachineName].ConnectionString); } public void CommitChanges() { _db.SubmitChanges(); } /// &lt;summary&gt; /// Gets the table provided by the type T and returns for querying /// &lt;/summary&gt; private Table&lt;T&gt; GetTable&lt;T&gt;() where T : class { return _db.GetTable&lt;T&gt;(); } public void Delete&lt;T&gt;(Expression&lt;Func&lt;T, bool&gt;&gt; expression) where T : class { var query = All&lt;T&gt;().Where(expression); GetTable&lt;T&gt;().DeleteAllOnSubmit(query); } public void Delete&lt;T&gt;(T item) where T : class { GetTable&lt;T&gt;().DeleteOnSubmit(item); } public void DeleteAll&lt;T&gt;() where T : class { var query = All&lt;T&gt;(); GetTable&lt;T&gt;().DeleteAllOnSubmit(query); } public void Dispose() { _db.Dispose(); } public T Single&lt;T&gt;(Expression&lt;Func&lt;T, bool&gt;&gt; expression) where T : class { return GetTable&lt;T&gt;().SingleOrDefault(expression); } public IEnumerable&lt;T&gt; ExecuteStoredProcedure&lt;T&gt;(params object[] parameters) { Type genericType = typeof(T); string commandstring = genericType.Name.Replace("Result", ""); //_db is my Linq To Sql database return _db.ExecuteQuery&lt;T&gt;(commandstring, parameters).AsEnumerable(); } public IQueryable&lt;T&gt; All&lt;T&gt;() where T : class { return GetTable&lt;T&gt;().AsQueryable(); } public void Add&lt;T&gt;(T item) where T : class { GetTable&lt;T&gt;().InsertOnSubmit(item); } public void Add&lt;T&gt;(IEnumerable&lt;T&gt; items) where T : class { GetTable&lt;T&gt;().InsertAllOnSubmit(items); } public void Update&lt;T&gt;(T item) where T : class { //nothing needed here } } </code></pre>
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